Amount of damages awarded to the plaintiff in the legal matter.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349

Name:	us-gaap_LossContingencyDamagesAwardedValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Commitments and Contingencies - Legal Matters (Details) € in Millions	1 Months Ended
	Dec. 31, 2017 EUR (€) claims	Mar. 31, 2014 EUR (€)	Mar. 31, 2016 EUR (€)
Legal Matters
Matters that might have a material adverse effect on financial position, results of operations or cash flows \| claims	0
Customer claim
Legal Matters
Judgment issued	€ 3.5	€ 1.9
Damages, plus interest, with the possibility of additional damages to be determined			€ 1.7
Costs and Legal Fees [Member] \| Customer claim
Legal Matters
Judgment issued	€ 0.1